Liquid crystal display device

Abstract

In a driving method capable of dot inversion without an increase in power consumption of an IC, measures are taken to deal with the lack of time for wiring data signals, when the screen is enlarged and the number of pixels increases, or when the frame frequency increases. In order to obtain the same effect as the case of the dot inversion, the pixels are arranged in a staggered arrangement in which the polarity inversion of the data signal is performed with the same frequency as in the column-by-column inversion. In order to deal with the lack of time for writing data signals because of large screen or other reasons, preliminary writing is performed when the scan line of the previous row prior to the scan line in which the data signal is to be written is selected.

1 . A liquid crystal display device comprising pixels formed in a matrix shape, each surrounded by signal lines extending in a vertical direction and arranged in a horizontal direction as well as by scan lines extending in the horizontal direction and arranged in the vertical direction, in which an image signal is supplied from the signal lines to the pixels by selection of a scan line,
 wherein, on one side of a specific signal line, a pixel corresponding to a specific color is connected to the specific signal line, and on the other side of the specific line, a pixel corresponding to a different color is connected to the specific signal line, and   a specific pixel is connected to a specific scan line, in which the image signal is supplied to the specific pixel when the specific scan line is selected and when a scan line that is two scans prior to the specific scan line is selected.   
     
     
         2 . The liquid crystal display device according to  claim 1 ,
 wherein the polarities of the image signal supplied from the signal lines are opposite in adjacent lines.   
     
     
         3 . The liquid crystal display device according to claim  1 ,
 wherein the polarities of the image signal supplied from the signal lines are the same in one frame period, and are reversed when the frame is changed.   
     
     
         4 . A liquid crystal display device comprising pixels formed in a matrix shape, each surrounded by signal lines extending in a vertical direction and arranged in a horizontal direction as well as by scan lines extending in the horizontal direction and arranged in the vertical direction,
 wherein, on one side of a specific line, a pixel corresponding to a specific color is connected to the specific signal line, and on the other side of the specific signal line, a pixel corresponding to a different color is connected to the specific signal line,   the pixel includes a pixel electrode and a TFT, the TFT having a gate connected to the scan line, a source connected to the signal line, and a drain connected to the pixel electrode, in which a pixel signal is supplied from the signal line to the pixel when a gate pulse is supplied to the scan line, and   a TFT of a specific pixel is connected to a specific scan line, in which the image signal is supplied to the specific pixel when the gate pulse is supplied to the specific scan line and when the gate pulse is supplied to a scan line that is two scans prior to the specific scan line.   
     
     
         5 . The liquid crystal display device according to  claim 4 ,
 wherein the gate pulse is supplied earlier than the start time of the image signal writing.   
     
     
         6 . The liquid crystal display device according to  claim 4 ,
 wherein the gate pulse is supplied to a plurality of the scan lines in series at a predetermined period, the gate pulse having a width identical to the predetermined period.   
     
     
         7 . The liquid crystal display device according to  claim 4 ,
 wherein the polarities of the image signal supplied from the signal lines are opposite in adjacent signal lines.   
     
     
         8 . The liquid crystal display device according to  claim 4 ,
 wherein the polarities of the image signal supplied from the signal lines are the same in one frame period, and are reversed when the frame is changed.   
     
     
         9 . A liquid crystal display device comprising pixels formed in a matrix shape, each surrounded by signal lines extending in a vertical direction and arranged in a horizontal direction as well as by scan lines extending in the horizontal direction and arranged in the vertical direction,
 wherein, on one side of a specific signal line, a pixel corresponding to a specific color is connected to the specific signal line, and on the other side of the specific signal line, a pixel corresponding to a different color is connected to the specific signal line,   the pixel includes a pixel electrode and a TFT, the TFT having a gate connected to the scan line, a source connected to the signal line, and a drain connected to the pixel electrode, in which a pixel signal is supplied from the signal line to the pixel when a gate pulse is supplied to the scan line,   the gate pulse is supplied to a plurality of the scan lines in series at a predetermined period, the gate pulse having a width less than the predetermined period, and   a TFT of a specific pixel is connected to a specific scan line, in which the image signal is supplied to the specific pixel when the gate pulse is supplied to the specific scan line and when the gate pulse is supplied to a scan line that is two scans prior to the specific scan line.   
     
     
         10 . The liquid crystal display device according to  claim 9 ,
 wherein the gate pulse is supplied at the same time when the image signal writing is started.   
     
     
         11 . The liquid crystal display device according to  claim 9 ,
 wherein the polarities of the image signal supplied from the signal lines are opposite in adjacent signal lines.   
     
     
         12 . The liquid crystal display device according to  claim 9 ,
 wherein the polarities of the image signal supplied from the signal lines are the same in one frame period, and are reversed when the frame is changed.